What you see here is a stendecworks.com spring. What, exactly, is so special about it? Well, it's a proprietary blend of metals that weighs in at 100 grams or so lighter than ti. And it's available in 25lb increments. And it retails for about 80 British pounds. How good are they? The entire Giant Factory Racing squad is on them.
As far as i know, the whole team is running the new Vivids or atleast the chassis. Looking forward for some more details about those springs, 100g lighter than similar titaniums for ~80 Pounds must be a bargain.